B1adjective5K

UK/["/ˈpɔɪzənəs/"]/US/["/ˈpɔɪzənəs/"]/

Meaning of Poisonous

causing death or illness if swallowed or taken into the body

In simple words: Something that can make you sick or kill you.

Poisonous in a sentence

  • poisonous chemicals/fumes/plants
  • a poisonous substance
  • This gas is highly poisonous.
  • The leaves of certain trees are poisonous to cattle.
  • poisonous snakes
  • a tiny spider with a poisonous bite
  • a poisonous person
  • the poisonous atmosphere in the office

How to use Poisonous

Use 'poisonous' to describe plants or animals that can harm people. It's appropriate in scientific contexts and everyday discussions, but be careful not to confuse it with 'venomous', which applies to animals that inject poison.

Grammar pattern

poisonous + object

Memory hint

Think of 'poison' in 'poisonous' — it's a warning sign.

Related words

Synonyms for Poisonous

Opposites of Poisonous

Common mistakes with Poisonous

  • Confusing 'poisonous' with 'venomous'.
  • 'Poisonous' used with inanimate objects like 'poisonous gas' can be misused in some contexts.

Poisonous appears in

Poisonous in other languages

More words like Poisonous

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Frequently asked questions about Poisonous

What does Poisonous mean?

Something that can make you sick or kill you.

What is the definition of Poisonous?

causing death or illness if swallowed or taken into the body

How do you use Poisonous in a sentence?

poisonous chemicals/fumes/plants

Can you give another example of Poisonous?

a poisonous substance

What are synonyms for Poisonous?

Common alternatives include toxic, venomous.

What is the opposite of Poisonous?

Opposite meanings include safe, harmless.

What words go with Poisonous?

It commonly pairs with be, become, deadly, extremely, highly, to, be, become, deadly, extremely, highly, to.

What are common mistakes when using Poisonous?

Confusing 'poisonous' with 'venomous'. 'Poisonous' used with inanimate objects like 'poisonous gas' can be misused in some contexts.

How do you pronounce Poisonous?

US: /["/ˈpɔɪzənəs/"]/, UK: /["/ˈpɔɪzənəs/"]/. Listen to the audio above to hear native pronunciation.

When should I use Poisonous?

Use 'poisonous' to describe plants or animals that can harm people. It's appropriate in scientific contexts and everyday discussions, but be careful not to confuse it with 'venomous', which applies to animals that inject poison.

What CEFR level is Poisonous?

"Poisonous" is at B1 level on the CEFR scale.